Date: Wed, 20 Nov 1996 19:47:35 GMT
Server: NCSA/1.4.2
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Last-modified: Thu, 26 Sep 1996 12:46:34 GMT
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<title>Real-Time Database Systems Lab</title>
<h2>Real-Time Databases: MDDS Systems</br>
University of Massachusetts, Amherst</h2>

The Real-Time Database Systems Laboratory is part of the
<!WA0><a href="http://www.cs.umass.edu/"> Computer Science Department</a> at the
<!WA1><a href="http://www.cs.umass.edu/rcfdocs/newhome/index.html">
University of Massachusetts</a>.  
Our <!WA2><a href="http://www-ccs.cs.umass.edu/rtdb/formitre.ps"> current research</a> and
<!WA3><a href="http://www-ccs.cs.umass.edu/rtdb/forord96.ps"> current results</a> focus
on integrating active,
real-time, temporal and multimedia databases 
for crisis management in Massive Digital Data Systems (MDDS).
This work is funded by the Advanced Research and Development Committee
of the Community Management Staff.
<p>

<!WA4><img src="http://www-ccs.cs.umass.edu/images/clr-line2.gif"></br>

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<h2>Principal Investigators</h2>
<menu>
<!WA5><img src="http://www-ccs.cs.umass.edu/images/redbull.gif">
  <!WA6><a href="http://www-ccs.cs.umass.edu/krithi/home.html">Prof. Krithi Ramamritham</a>
</br><!WA7><img src="http://www-ccs.cs.umass.edu/images/redbull.gif">
  <!WA8><a href="http://www-ccs.cs.umass.edu/stankovic/home.html">Prof. John Stankovic</a>
</br><!WA9><img src="http://www-ccs.cs.umass.edu/images/redbull.gif">
  <!WA10><a href="http://www-net.cs.umass.edu/personnel/towsley.html"> Prof. Don Towsley</a>
</menu>

<h2>Graduate Students</h2>
<menu>
<!WA11><img src="http://www-ccs.cs.umass.edu/images/redbull.gif">
  <!WA12><a href="http://www-ccs.cs.umass.edu/~sivasank/home.html">Raju Sivasankaran</a>
</br><!WA13><img src="http://www-ccs.cs.umass.edu/images/redbull.gif">
  <!WA14><a href="http://www-ccs.cs.umass.edu/~xiong/home.html">Ming Xiong</a>
</br><!WA15><img src="http://www-ccs.cs.umass.edu/images/redbull.gif">
  <!WA16><a href="http://www-ccs.cs.umass.edu/~padhye/home.html">Jitendra Padhye</a>
</menu>

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<h2>Real-Time Concurrency and Recovery Algorithm Testbed (retired)</h2>
<p> Real-Time Concurrency and Recovery Algorithm Testbed (RTCARAT) was
the first physical testbed for real-time databases.  It contained all
the major functional components of a transaction processing system,
including real-time concurrency control, transaction scheduling,
etc. Experiments were conducted focusing on real-time
transaction processing. Ideas developed here were extended
and formed the basis for RADEx (see below).
<p>

<h2>Graduated Students</h2>
<p>
<UL>
<LI>Dr. Jiandong Huang
<LI>Bhaskar Purimetla
</UL>
<p>
<!WA18><a href="http://www-ccs.cs.umass.edu/rtdb/rtcarat.html">Publications</a>
</p>
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<h2>Real-Time Active Database Experimental Simulator</h2> <p>
Real-Time Active Database Experimental Simulator <!WA20><a
href="http://www-ccs.cs.umass.edu/rtdb/radex.html">(RADEx)</a> is the first real-time,
active, object-oriented, temporal database simulator. It is being used to 
study
<p>

<menu>
<!WA21><img src="http://www-ccs.cs.umass.edu/images/redbull.gif">
  Priority assignment and real-time transaction scheduling in active 
real-time databases</a>
</br><!WA22><img src="http://www-ccs.cs.umass.edu/images/redbull.gif">
  Real-time logging and recovery</a>
</br><!WA23><img src="http://www-ccs.cs.umass.edu/images/redbull.gif">
   Consistency and scheduling in temporal databases</a>
</br><!WA24><img src="http://www-ccs.cs.umass.edu/images/redbull.gif">
  Multimedia databases</a>
</menu>


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<h2>Previous Work</h2>

<h4> Transaction Processinig in Real-Time Active Databases  </h4>

<!WA26><a href="http://www-ccs.cs.umass.edu/rtdb/applications.html">Real-Time Active Database Applications  </a>
<p>
<!WA27><a href="http://www-ccs.cs.umass.edu/rtdb/priority.html">Priority Assignment in Real-Time Active Databases</a>
<p>

<!WA28><img src="http://www-ccs.cs.umass.edu/images/clr-line2.gif"></br>

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<h2>Current Work</h2>
<h4> Enhancing the RADEx simulator to include the following</h4>

<!WA29><a href="http://www-ccs.cs.umass.edu/rtdb/recovery.html">Logging and Recovery</a>
<p>
Feasibility Checking
<p>
<!WA30><a href="http://www-ccs.cs.umass.edu/rtdb/temporal.html">Temporal Data </a>
</menu>
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<h2>Miscellaneous</h2>
<h4> Other related <!WA32><a href="http://www-ccs.cs.umass.edu/rtdb/misc.html">papers</a> can be found.</h4>



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<p> <!WA33><a href="http://www-ccs.cs.umass.edu/db.html">
  <!WA34><img src="http://www-ccs.cs.umass.edu/images/database150x75.gif">Back to the DB Home Page </a>
<!WA35><a href="http://www-ccs.cs.umass.edu/rts.html">
  <!WA36><img src="http://www-ccs.cs.umass.edu/images/rts75x75.gif">Back to the RTS Home Page</a>
<p>

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</br></br><i>If you have any comments on this page or need further information,
please send your mail to </i><!WA38><a href="mailto:sivasank@cs.umass.edu">
<b>sivasank@cs.umass.edu</b></a> or <!WA39><a href="mailto:xiong@unreal.cs.umass.edu">
<b>xiong@cs.umass.edu</b></a> <br>
Last Update: 23 May 1996.
